I added the wpDiscuz plug-in to enable comments. It does work with the pages but when I tried to add comments to a Sonaar playlist it does not seem to show them.

I followed the wpDiscuz support suggestions but still it does not work. As a last resource they recommended to add the following, but I am not sure what should the 'my post type' be and where should I add this code if it is the way to fix the problem: (thank you)

function comment_support_for_my_custom_post_type() {     add_post_type_support( 'my_post_type', 'comments' );
}
add_action( 'init', 'comment_support_for_my_custom_post_type' );